Owner's Manual

The Percent Scale next to the Start Times can adjust the
percent scaling of the program Run Times. You can enter
any value from 0 to 250 or adjust the value by clicking on the
up/down arrows. 100 is normal, meaning 100 percent of the
actual run time. A smaller value will reduce the run time of
each slot to that percentage and a larger value will increase it.
For example, 200 would double the run times. This factor
applies to all slots for the selected program, and therefore to
the total duration (Start Duration) of the program. The run
times in the slots will remain unchanged on the screen
because the percentage is applied in the field unit after it
receives the program. However, the Start Duration is
updated to reflect the percent scaling for an instant reference.
For example: With a percent scale of 200%, stations 1 through 5 assigned in slots 1 through 5 will run for 6 minutes each
(200% of the 3 minutes entered in slots 1 through 5), then another 10 minutes each for stations 1 through 5 assigned in slots
6 through 10 (200% of the 5 minutes entered in slots 6 through 10), for a total of 80 minutes, or 1 hour and 20 minutes. This
scaled-up total applies to all three start times.
The Water Window is the period of time during each day when irrigation is allowed. The field unit will disable irrigation
outside the water window time. In the picture above, the start and end of the Water Window are exactly the same, from 8:00
AM to 8:00 AM, so irrigation is allowed for 24 hours each scheduled day. If the end of the Water Window was changed to
11:30 PM, the program will never finish. irrigation will cease at 11:30 PM, half an hour after the 11:00 PM Start Time and the
program is still 50 minutes short of being completed.
If you are required to complete all irrigation within a certain daily period, you can set the water window to that length. If
necessary, you can use Percent Scaling to adjust the duration of the program until it fits within the watering window.
Continuous Run is a special case of the Water Window, in which all non-zero slots will continue to run from the beginning
to the end of the Water Window. To work this way, the Water Window must end at least 1 minute short of a full day. The
program will start at the beginning of the Water Window and repeat continuously until the end of the Water Window. The
Sentinel Flow Optimizer cannot optimize programs using the continuous run option because it optimizes the system through
re-assignment of start times. Therefore, Continuous Run programs are automatically excluded from optimization.
The Repeat option will automatically repeat the program for
the specified number of times. You can enter any value from 0
to 250. Zero will let the program run once and never repeat, 1
will repeat it once, and so on. If repeating the program causes
the total Start Duration to exceed the time between two Start
Times, the Start Times will turn red to warn you. In the
picture, percent scaling was already set at 200%, doubling the
original Start Duration of 40 minutes to 80 minutes. The
repeat again doubled the total to 2 hours and 40 minutes,
exceeding the time between starts.
You can enter a Delay between repeats, in minutes, of any value from 0 to 255 (4 hours, 15 minutes). After the first time the
program runs, the program will wait for the specified amount of delay time before repeating. The program will then run again
and delay the same amount of time and so on.
Delay
Repeats
Continuous Run
Water Window
Percent Scale
5 - 12
Toro Sentinel Central Software User’s Guide